Home / 18,941.57-28,406.87-6,461.31

Finding the Fourth Proportional to 18,941.57, 28,406.87 and 6,461.31

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Solution

The fourth proportional to 18,941.57, 28,406.87 and 6,461.31 is: 9,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.57 : 28,406.87 = 6,461.31 : x
  2. Step 2: Convert to fraction form
    18,941.57/28,406.87 = 6,461.31/x
  3. Step 3: Cross multiply
    18,941.57x = 28,406.87 × 6,461.31
  4. Step 4: Simplify right side
    18,941.57x = 183,545,715.88
  5. Step 5: Solve for x
    x = 183,545,715.88/18,941.57
  6. Step 6: Final answer
    x = 9,690.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.